Portable saw



June 25, 1929. J. H. HITTLE 1.718.860

PORTABLE SAW I I Filect Oct. 51, 1927 4 Sheets-Sheet 1 June 25, 1929.

J. H. HITTLE PORTABLE SAW 4 Sheets-Sheet 2 Filed Oct. 31, 1927 Jj-f, Him 26 \NVENTOR ATTO R N EY WITNESS:

June 25, 1929.

J. H. HIITTLE P-ORTABLE SAW Filed Oct. 51, 1927 4 Sheets-Sheet 5 INVENTOR WITNESS:

ATTORNEY J. H. HITTLE PORTABLE SAW June 25, 1929,

Filed Oct. 31, 1927 4 Sheets-Sheet 4 QWITNESS:

ATTORNEY Patented June 25, 1929.

JOHN H. HITTLE, OF GQFF KANSAS.

PORTABLE SATV.

Application filed October 31, 1827. Serial No.230,018.

My present invention has reference to im- 1n7ovements in portable saws, the primary object of the invention being to provide a motor driven vehicle in which the motor employed for propelling the vcaicle utilized for op erating a rotary saw or for driving other mechanism or machinery.

it further object is to mount on a truck body a gasoline engine to hitch the same to novel mechanism whereby the engine is utilized for propelling the truck or vehicle at varying speeds in a forward direction as well. as in a reverse direction, and further wherein there is mounted, in a novel manner, at the forward end of the truck or vehicle, a shaft to which may be secured a circular saw or to which there may he hitched other devices or mechanisms, the said shaft being driven by the engine after the latterhas been unhitched from the propelling means for the vehicle.

A still further object is the provision of a device of this type in which a wheeled truck or vehicle having an engine mounted thereon is propelled by the engine, controlled and guided by the operator and wherein the bed of the truck or vehicle has reniovably secured to one end thereof a frame that carries a shaft to be also driven by the engine, the said shaft primarily designed to have secured thereon a circular saw and the frame supportii'ig thereon, in a novel manner, a feed table for feeding the log or other material to the saw in, the ci'itting operation and for moving the table away from the saw after a log on the like has been cut.

The invention will be fully and compre hensively inulerstood from a c msidcration of the following detailed description when read in connection with the accompanying drawings, which form part of the application, with the understanding, however, that the iin iroveinent is capable of extended mplication and is not confined to the exact showing of the drawings nor to the precise construction described and, therefore, such changes and modifications may be made therefrom as do not affect the spirit of the invention nor exceed the scope thereof as expressed in the appended claim.

l nthe drawings:

Figure 1 is a side elevation of my i1n1 irovement.

Figure 2 is a similar view with parts in section.

Figure 3 is a top plan view of the improve ment with the engine removed.

Figure 4 is a t 'ansverse sectional view approximately on the line 4e4- of Figure Figure 5 is a similar sectional view on the line 5-5 of Figure 2.

Figure 6 is a detail view to illustrate the mount for the belt tightening wheel.

In carrying out my invention I mount upon the rear or drive wheels 1 and front or steering wheels 2, the bed or body 3 of the improvement. The bed or body is preferably made up of channeled sidemenibers and iiiterinediate beams which are, of course, supported upon the transverse connecting elements of the frame. The axle for the front wheels 2 has the usual forked ends between which there are pivoted the spindles for the stub axle on which the wheels 1 are 'iournaled. The steering knuckles for the front wheels have connected thereto in the usual manner, the steering connecting rod 4 and the outer angle arm to which. the steering rod 5 is connected. The steering rod has its free end associated, in the usual manner, with a steering post which is encased in the usual tubular housing and which is operated by the usual hand wheel The steering wheel 6 is, of course, located adjacent to the rear of the body and directly forward of the drivers seat 7 At one side of the drivers seat there is secured a tool box 8.

Mounted on the bed or body 3 there is an engine 9 of the usual. stationary type, and which engine employs gasoline as a motor fuel. The shaft for the engine is located for distinction by the numeral. 10, and on this shaft there the usual fly wheel 11 and a belt wheel 12. i

The belt wheel 12 is designed to have removably arranged thereon an endless belt 13, and this belt, when in applied position, is also trained over a belt wheel ll that is mounted on one end of a shaft 15. i 011 the shaft 15 there is arranged slidable sleeve 16 that carries at its ends beveled pinions l7 and 18, respectively. The sleeve has its bore provided with a key-way in which is received a key 19 that is set in the shaft 15. The sleeve also has a central annular groove in which is received pins that extend from the arm 20. The outer end of the ar1n20 has an angle extension in the nature of a shaft 21, the said shaft being upwardly directed and being journaled through suitable bearing openings in a bracket 22 that is secured in the bottom of the bed or frame 3. The'upper end of the shaft 21 is provided with an angle arm or finger 23 to which is pivoted thebifurcated end of a rod 24. The rod 24 is extended rearwardly of the bed or frame and is pivotally connected to a lever 25 that is journaled on a rod or shaft 26, the said shaft v on the end of the drive shaft for the rear wheels 2 of the device. The drive shaft is mounted in asuitable housing and carries the usual beveled pinion that is designed to intermesh with one of the differential gears for the rear axle and which axles are, of course, mounted in the usual housing- As far as the description has. progressed it will be be seen that by'operating the lever 25 the sleeve 16 maybe. turned to bring either of the gears 17 or 18 into mesh with the gear 28 and thereby impart a rotary movement to the drive shaft and consequently causing the engine to propel the device in either direction. It will be alsonoted that when the sleeve 16 is shifted to arrange the gears 17 and 18 in neutral position with respect to the gear 28, the shaft 15 will freely turn without imparting motion to the vehicle. a

Arranged on one of the transverse beams ofthe bed or frame of the improvement there i is a plate 29 provided with series of longitudinally extending elongated and alining slots 30 through which-slots there are passed the shanks'of headed members, such as bolts 31.

' The plate has centrally fixed theretothe stub axle 32 having an outer headed end 33 and on .this stub axle there is ournaled a. belt tightening wheel or pulley .34. The plate has an upwardly extending'arm at one corner thereof which is indicated by the numeral 35, to which --there is pivoted a rod 36 which in turn is pivoted to a lever. 37 that is journaled on the shaft 26. The lever 37 carries a hand operated spring influencedrod to engage with the teeth of the segmental rack 38 that is fixed on-thebed or frame. In this manner it will be seen that the belt tightener comprising the wheel or pulley 34 may be bodily moved with its mount longitudinally to contact with the belt 13 at varying degrees of friction with the I result that the shaft 15 may be revolved at different speeds and consequently the drive Wheels may be also rotated at different speeds.

The drive wheels of the device have the usual drums on which there arearranged the :ordinary brakeshoes, the said shoes in this instance, being forced into and out of frictional engagement with the brake drums through the turning of the shaft 26. To ac complish this the shaft 26 has fixed thereon an upstanding lever 39 provided with the usual hand operated spring influenced dog that engages the notches of a segmental rack 40 which is fixedly secured on the bed or body 3.

The operating levers above described, are conveniently located with respect to the occupant of the seat 7 and at the forward end of the body or bed I removably secure a substantially rectangular frame which is broadly indicated by the numeral 41. The frame 41 has slidably arranged thereon a feed table 42, the same being influenced in an outward direction through the medium of a. spring 43.

The saw table 4-2 is in the nature of a substantially rectangular frame-like member which is arranged for slidable movement between the part which 1 have termed the frame 41. The frame 41 carries rollers on which the frame constituting the feed table slides and may be provided with other bearings for the table. The sides of the table normally abut with a transverse plate 70 which is secured to the frame 41 and which carries a spring secured centrally on a plate 43 carried by the table 42 in order to influence the table outwardly with respect to the frame. By reference to the drawings it will be seen that the ends of the plate 43 are arranged over the upper edges of the side members of the frame 41.

The sides of the frame 41 have fixedly secured thereto bearings 44 for a shaft 45 that carries a pulley wheel 47. The shaft 45, in the showing of the drawings has fixed on one of its ends a circular saw 46. The frame member 41 carries a transverse rod or shaft 77 journaled in suitable bearings next to the plate 76 of the table 42. The shaft 77 carries on one of its ends an angle bracket 49 that has an angularly arranged shaft disposed opposite the pulley wheel 47 and on which there is journaled a roller50. The roller is influenced in one direction by a spring 51.. The rod or bar 43 carries an upstanding shaft on which there is pivoted av roller 52, disposed in close proximity to what may be. termed the inner edge of the rollers 47 and 50.

After the machine has been moved by the operation of the engine to a location where the sawing operation is to take lJlillC the lever 25 is operated to move the sleeve to bring the pinion 17 or 18 in neutral position with respect to the pinion 2S and the lever 39 is swung to apply the brakes for the drive or 1,71e,eeo 3 or roller 50 is journaled and also by an upstanding guide wheel 52 that is suitably our- .na-led on either the bed or the feed table frame. The engine now operated to revolve the shaft 155 and rotate the circular saw. The outer end of the teed table 42 has fixedly secured thereon spaced transverse plates 78 on which there are lixed the horizontal parts oi? angle plates 79. The upstanding portions oi? the elements T9 provide abutments for a log to he placed on the table and the elements 7!) provide a means whereby the table may he readily moved in the direction of the saw Li-ii. After a block has been severed by the saw the spring 433 will move the table to permit of the adjustment of the log on the table so that a second block may be severed from the said log. Obviously the saw may be detached from the shaft 45 and a pulley or sprocket wheel may be secured thereon and hitched to any meehanisn'i to be operated by the improvement. My construction is comparatiwly simple and the same may so cheaply mainiiactin'ed and commercialized. The advantages,it is thought, will be perfectly apparent to those skilled in the art to which such invention relates so that further detail description is not thought necessary. As has been previously stated, the improvement is not to be restricted to the operation of circular saws and the device may be considered in the nature of a portable power plant.

Having described the invention, I claim:

In a device for the purpose set forth, a bed mounted on guide wheels and drive wheels, a difii'erential for the axle of the drive Wheels, a shaft for operatii'ig the ditierential, a beveled pinion on the outer end oi the shaft, brake means for the drive Wheels, a motor supported on the bed, a pulley carrying shait journaled on the frame, a sleeve keyed for slidable .n'iovement on the pulley shaft, iaeing beveled wheels on the sleeve, said pulley shaft d csi r red to have trained thereon a belt driven by too motor, a shaft journaled transversely adjacent the drive wheels, a connection between said shaft and the brakes :for the drive wheels, a lever for turning the shaft to apply or disengage the brakes, a spring in fiueneed pawl associated with said lever, a seg 'inental rack engaged by the pawl, a second lever i reely jOLHJHHlQd on the last mentioned shatt, a hand operated pawl on said lever, a segn'iental rack engaged by the pawl, a belt tightening wheel, a slidable mount therefor, a rod connection between the mount and the last mentioned lever, a third lever freely mounted on the last mentioned shaft and having the hand operated pawl, a segmental rack engaged by the pawl, shitting means tor the sleeve operable by the last mentioned lever whereby to bring either of the gears on the sleeve into mesh with the pinion ot the drive shaft and arrange such gears in neutral position, and steering wheel operated means tor steering; the guide Wheels.

In testimony whereoil I ai'tii: my signature.

JOHN H. HITTLE. 

